1 // Copyright 2016 The Chromium Authors. All rights reserved.
2
3 // Fuzzer for ucasemap.
4
5 #include <stddef.h>
6 #include <stdint.h>
7 #include <memory>
8 #include "third_party/icu/fuzzers/fuzzer_utils.h"
9 #include "third_party/icu/source/common/unicode/ucasemap.h"
10
11 IcuEnvironment* env = new IcuEnvironment();
12
13 template<typename T>
14 using deleted_unique_ptr = std::unique_ptr<T,std::function<void(T*)>>;
15
16
17 // Entry point for LibFuzzer.
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)18 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
19 UErrorCode status = U_ZERO_ERROR;
20
21 auto rng = CreateRng(data, size);
22 const icu::Locale& locale = GetRandomLocale(&rng);
23 uint32_t open_flags = static_cast<uint32_t>(rng());
24
25 deleted_unique_ptr<UCaseMap> csm(
26 ucasemap_open(locale.getName(), open_flags, &status),
27 [](UCaseMap* map) { ucasemap_close(map); });
28
29 if (U_FAILURE(status))
30 return 0;
31
32 int32_t dst_size = size * 2;
33 std::unique_ptr<char[]> dst(new char[dst_size]);
34 auto src = reinterpret_cast<const char*>(data);
35
36 switch (rng() % 4) {
37 case 0: ucasemap_utf8ToLower(csm.get(), dst.get(), dst_size, src, size,
38 &status);
39 break;
40 case 1: ucasemap_utf8ToUpper(csm.get(), dst.get(), dst_size, src, size,
41 &status);
42 break;
43 case 2: ucasemap_utf8ToTitle(csm.get(), dst.get(), dst_size, src, size,
44 &status);
45 break;
46 case 3: ucasemap_utf8FoldCase(csm.get(), dst.get(), dst_size, src, size,
47 &status);
48 break;
49 }
50
51 return 0;
52 }
53
54